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1、Unit1LivingWellDiscoveringusefulstructuresRevisionoftheInfinitive动词不定式的作用FunctionsofInfinitive主语(subject)宾语(object)表语(predicative)定语(attribute)状语(adverbial)宾补(objectcomplement)1.Seeingistobelieve.Toseeisbelieving.Seeingisbelieving.Toseeistobelieve.×√√×3.Allyouhavetodois(to)finishthejobquickl
2、y.2.Myjobistohelpthepatients.Ⅲ.作表语不定式常用在系动词be,seem,appear,get,remain等后作表语．如果主语部分有个表示不定式内容的do，用作表语的不定式可省略toⅣ.作定语(常常表示将来的动作)1.不定式做定语时常放在被修饰的名词或代词之后Shewasverybusyandhadnotimetovisitherfriends.Ladiesandgentlemen,Ihavesomethingimportanttotellyou.2.当名词被thefirst,thelast,theonly等词以及形容词最高级修饰时eg:Sheis
3、alwaysthefirsttocomeandthelasttoleave.①②4.如果不定式是不及物动词,则后面需适当的介词Pleasepassmesomepapertowrite____.Shehasanicepentowrite_____.Heboughtaflatforthefamilytolive____.5.Doyouhavealettertosend?Doyouhavealettertobesent?你有信要我寄吗？你有信要寄吗？onwithin3.也可用在have…todo和therebe句型中。Thereisnoonetotakecareofher.Ihave
4、nojewelrytowear.eg:Hespokeloudly(soas/inorder)tobeheard.Ⅴ.作状语1.表示目的:to/inorderto/soasto2.表示原因不定式可以用在作表语的形容词后作状语,sorry,surprised,happy,glad,eager,angry,foolish,right,wrong,slow,quick,rude,cruel,disappointed等。eg:I’mglad/pleasedtoseeyou.Weweresurprisedtohearthenews.3.结果状语:so+adj./adv.+astodo…su
5、ch+adj.+n.+astodo…adj./adv.+enough+todotoo+adv./adj.+todo③Wehurriedtothestationonlytofindthetrainhadleft.Hewassofoolishastobelieveit.=Hewassuchafoolastobelieveit.=Hewasfoolishenoughtobelieveit.I’mtootiredtowalkanyfurthertonight.①②Ⅵ.作宾补Ididn’taskyoutopayforthemeal.Theyhavewarnedustobecarefulo
6、frats.不定式在下列动词后作宾语补足语时，要省略to“感觉”feel“听”hear,listento“使役动词”have,make,let“看”see,lookat,observe,watch,notice但当以上的动词用于被动式，to要还原：1.Theysawtheboyfallsuddenlyfromthetree.Theboywasseentofallsuddenlyfromthetree.2.MothermadeJohnwashthecarforaweek.Johnwasmadetowashthecarforaweek.动词不定式的时态和语态一般式完成式进行式完成进
7、行式todotohavedonetobedoingtohavebeendoing形式主动被动tobedonetohavebeendone1.Iaskedhimtoattendthemeeting.2.HeseemstobereadingEnglishpoems.3.HeissaidtohavetranslatedthebookintoEnglishlastyear.（toattendthemeeting动作发生在ask后)（seem和read同时发生,强调动作正在进行）（translatet
